JPH0547684Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is used by hooking and fixing a hook near the end of a car window, especially a side window.
This invention relates to a side sunshade that blocks glare from direct sunlight.

[Conventional technology]

For people riding in cars, the direct sunlight that enters through the windows in the summer is extremely hot and dazzling.
It also causes sunburn and eye fatigue, and also significantly reduces the effectiveness of air conditioning inside the car. Therefore, recently, side sunshades are sometimes installed on the entire inside of windows, especially on the side windows.This prevents the cooling effect from decreasing, and
This prevents fragments of window glass from scattering into the room when the window glass breaks.

Conventionally, this type of side sunshade, which was started in Utility Model Application No. 10110/1983, is a curtain that is wound around a winding member 26 by the force of a spring member 25, as shown in FIGS. 7a and 7b. 23, the protective member 20
The curtain 23 is pulled out from inside, and the drawn curtain 23 is held by the cooperative action of the curtain holding member 21 and the stopper 24, and the one end is attached to a desired part of the side window by the steady rest member 22 fixed to one end of the curtain 23. It is a structure that fixes the

[The problem that the idea aims to solve]

In the above-mentioned conventional side sunshades, the stoppers and curtain holding members deteriorate and age due to long-term use, and their clamping strength decreases, making it impossible to properly clamp the curtain, and the holding function of the drawn curtain deteriorates. The drawback is that it disappears.

In this invention, a long screen with a fixing suction cup at one end is rolled into a roughly half-cylindrical case so that it can be drawn out and stored inside the case, and the rear side of the case has a predetermined end of a side window. A side sunshade with a highly reliable stopper mechanism that can always properly hold the screen pulled out from the case at any desired position on the side window. is intended to provide.

[Means to solve the problem]

In order to achieve the above object, the side sunshade with a stopper mechanism of the present invention includes a barrel to which the other end of the screen is fixed in the longitudinal direction, and one end of the barrel is fixed to one end of the case. The barrel is rotatably supported by a holder, and within the barrel there is an outer member that contacts the inner wall of the barrel and allows the barrel to rotate, but urges the barrel to wrap around the screen due to the frictional force caused by the contact. A large part of the shaft around which a spring of the same diameter is wound is inserted from the other end of the barrel, and the end of the shaft that protrudes from the other end of the barrel is fixed to a holder fixed to the other end of the case so as not to rotate. On the other hand, a driving part of a one-way clutch that is engaged when the screen is wound is fixed to the other end of the barrel, the other end of the spring is fixed to the driving part, and the shaft is fixed to the other end of the barrel. A pawl is formed on a portion protruding from the other end of the barrel, and the driven portion of the one-way clutch is fitted into the outer peripheral portion of the shaft on which the pawl is formed, and the driven portion is fitted into the inner diameter portion of the shaft. A centrifugal stopper fitting is provided, and the centrifugal stopper fitting has a through hole larger than the outer diameter of the shaft, and engages with a pawl of the shaft when the driven part rotates at a certain rotational speed or less, and the centrifugal stopper fitting has a through hole larger than the outer diameter of the shaft, and engages with a pawl of the shaft when the driven part rotates at a certain rotational speed or less. A notch is formed such that the engagement is released by the centrifugal force of the driven part when the rotation is larger.

Further, the driving part of the one-way clutch has a large number of hemispherical protrusions formed on one side, and the driven part has a screen that can be fitted with the large number of hemispherical protrusions on a side opposite to the one side. Preferably, a number of recesses are formed with walls that are slightly inclined in the direction of rotation of the barrel when the barrel is pulled out.

Furthermore, it is preferable that a pull handle is attached to a desired part of the fixing suction cup, and that a protruding stopper for preventing entanglement is attached to the surface of the pull handle.

[Effect]

In the present invention configured as described above, the barrel is biased in advance by a spring so as to wrap around the screen, and the screen is completely housed within the case. In this state, a desired portion of the screen is pulled out relatively slowly from inside the case against the biasing force of the spring, and then the screen is slightly retracted into the case. At this time, due to the weight of the centrifugal stopper fitting, the notch of the centrifugal stopper fitting engages with the pawl of the shaft fixed to the other end of the case, and the driven part of the one-way clutch housing the centrifugal stopper fitting engages with the barrel. By being engaged with the drive unit fixed to the barrel, the barrel will not rotate in the direction of winding the screen due to the biasing force of the spring, and the screen will not be housed in the case. and,
By attaching the fixing suction cup to a desired position on a predetermined side window, the screen is properly held at an arbitrary position while preventing the barrel from rotating in the screen winding direction due to the biasing force of the spring. Next, when storing the screen completely inside the case, first remove the fixing suction cup from the side window, pull out almost all of the screen from inside the case, and then suddenly release the screen. At this time, since the biasing force of the spring is large, the barrel rotates relatively quickly in the direction of winding the screen.
Further, since the driving portion of the one-way clutch fixed to the barrel and the driven portion fitted into the shaft are engaged, the driven portion also rotates relatively quickly. Due to the centrifugal force of this driven part, the notch of the centrifugal stopper fitting and the pawl of the shaft do not engage with each other.
The screen is forcefully rolled into the barrel and stored inside the case.

Further, the driving part of the one-way clutch has a large number of hemispherical protrusions formed on one side, and the driven part can be fitted with the large number of hemispherical protrusions on the side opposite to the one side, and the driven part can be fitted with the many hemispherical protrusions on the side opposite to the one side. If a large number of recesses are formed with walls that are small and inclined in the direction of rotation of the barrel, even if the drive part rotates in the direction of rotation, the driven part will slip relative to the drive part, causing the driven part to slip. is definitely stationary and does not rotate.

Furthermore, if a pull handle is attached to a desired part of the fixing suction cup, and a protruding stopper for preventing entanglement is attached to the surface of the pull handle, the preventive stopper will hit the case and prevent the screen from getting caught. This prevents the tip from getting caught inside the case.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view of an embodiment of the side sunshade with a stopper mechanism of the present invention, and Fig. 2 is a cross-sectional view of the main part with the screen 3 removed from the side sunshade with a stopper mechanism of Fig. 1. 3 is a perspective view of the other end of the shaft 13, and FIGS. 4a and 4b are cross-sectional views of the stopper mechanism, with the notch 14 ₁ of the centrifugal stopper fitting 14 engaged with the pawl 13 ₁ of the shaft 13, respectively; Figures 5a and 5b, which show the disengaged state, respectively show the drive unit 1.
1, and FIGS. 6a and 6b are a side view and a front view of the driven portion 12, respectively.

As shown in FIGS. 1 and 2, the almost semi-cylindrical case 8 has U-shaped hooks 2 ₁ and 2 ₂ attached to the back surface of the case 8, which can be locked near the end of a predetermined side window. There is. The material of the hooks 2 ₁ and 2 ₂ may be metal or synthetic resin, but if they are made of metal, it is preferable to coat the surface with synthetic resin, rubber, or the like. This is attached to the hook 2 at the top of the side window.
This is to prevent the surface of the sand window from being scratched when locking ₁ and 2 ₂ . Barrel 9 is
One end of the barrel 9 is rotatably supported via a cap 16 by a holder ₄₁ fixed to one end of the case 8, and a sheet-like screen 3, which forms the main body of the sunshade section, is fixed to the barrel 9 in the longitudinal direction. has been done. This screen 3 has many small openings 3 ₂
is formed. This large number of openings ₃₂ do not completely block the sunlight that enters the interior of the car, but serve as a sunshade. This is to prevent the interior of the car from becoming dark if sunlight is completely blocked, and the outside of the car from being visible from inside the car, which would impede driving. The material of the screen 3 is a semi-rigid polyvinyl chloride sheet, polyvinyl chloride leather, synthetic resin sheet such as polyethylene terephthalate, and the thickness of the screen 3 is generally in the range of 0.04 to 0.8 mm. The insert plate 1 is attached to the tip 3 ₁ of the screen 3.
5 is held by forming the screen 3 into a bag shape. This insert plate 15 has the function of preventing the tip ₃₁ of the screen 3 from curling, expanding and contracting due to direct sunlight, and from becoming loose or wavy. Furthermore, insert plate 1
5 also has the role of ensuring that the winding load by a spring 10, which will be described later, is evenly applied to one side of the tip ₃₁ of the screen 3, thereby preventing it from tearing. Further, a fixing suction cup 5 is attached to the tip ₃₁ of the screen 3 so that the screen 3 can be fixed to any flat surface of the window glass. A pull handle 6 is attached to the fixing suction cup 5 in order to facilitate the operation of pulling out the screen 3, and a protruding stopper 7 for preventing entanglement is formed on the surface of the pull handle 6. This entanglement prevention stopper 7 can prevent the tip ₃₁ of the screen 3 from being entangled into the case 8 even if the screen 3 is forcefully housed in the case 8 by the spring 10. Most of the shaft 13 is inserted into the barrel 9 from the other end of the barrel 9, and the shaft 13 is inserted into the barrel 9 from the other end.
A pawl 13 ₁ (see FIG. 3) is formed in a portion protruding from the other end. Also, shaft 13
The end protruding from the other end of the barrel 9 is connected to the holder 4.
₂ to the other end of the case 8. One end of the spring 10 is fixed to one end of the shaft 13, and the spring 10 is wound around the shaft 13. The outer diameter of the spring 10 is in contact with the inner wall of the barrel 9. By rotating it in the same direction and fixing it to the holder 4 ₂ , the barrel 9 is biased to insert the screen 3 . As shown in FIGS. 1, 2, 4, 5 and 6, the one-way clutch 11,
The drive unit 11 of 12 has a substantially two-stage cylindrical shape, and has a through hole 14 ₂ formed in the axial direction with a diameter larger than the outer diameter of the shaft 13, and a plurality of hemispherical protrusions 11 ₁ formed on one side. , is fitted to the other end of the barrel 9 so that the shaft 13 is inserted into the through hole 11 ₂ . Note that the other end of the above-mentioned spring 10 is fixed to this drive section 11. The driven part 12 of the one-way clutch has a substantially hollow cylindrical shape, and has a through hole 12 ₂ with a diameter larger than the outer diameter of the shaft 13 in the axial direction, and walls 12 ₃ , 12 ₄ inside.
A plurality of recesses 12 ₁ that can fit with the plurality of protrusions 11 of the drive part 11 are formed on one side, and the shaft 13 is inserted into the through hole 12 ₂ and provided at the pawl 13 ₁ of the shaft 13. . Note that the wall surfaces of the plurality of recesses 12 ₁ are sloped gently in the direction of the arrow Y, and as the barrel 9 biased by the spring 10 rotates in the direction of the arrow X, the drive unit 11 also moves in the direction of the arrow X. The drive section 11 and the driven section 12 are designed to engage only when the drive section 11 and the driven section 12 rotate. Further, the driven part 12 is controlled by the holder 4 ₂ .
It is pressed against the drive unit 11 with enough pressure to allow rotation. The centrifugal stopper fitting 14 is formed with a through hole 14 ₂ having a diameter larger than the outer diameter of the shaft 13, and the shaft 13 is inserted into the through hole 14 ₂ .
Moreover, it is accommodated in the driven portion 12 in a loosely fitted state. This centrifugal stopper fitting 14 is connected to the driven part 1
When rotating in the direction of arrow X below a certain number of rotations 2, it engages with the pawl ₁₃₁ of the shaft 13, and when rotating above a certain number of rotations, the engagement is released by the centrifugal force of the driven part 12. A cutout 14 ₂ like this is formed.

Next, the operation of this embodiment will be explained with reference to each figure.

The barrel 9 is biased in advance by a spring 10 so as to wrap around the screen 3, and the screen 3 is completely housed within the case 8. In this state, pull the pull handle 6 to resist the biasing force of the spring 10, relatively slowly pull out the screen 3 by a desired portion from inside the case 8, and then push the screen 3 into the case 8 a little. Store it. At this time, centrifugal stopper fitting 1
4, the notch 14 ₁ of the centrifugal stopper fitting 14 engages with the pawl 13 ₁ of the shaft 13 fixed to the other end of the case 8 (see a in FIG. 4).
and a plurality of recesses 1 in the driven parts 12 of the one-way clutches 11 and 12 that accommodate the centrifugal stopper fittings 14.
2 ₁ and the plurality of protrusions 11 of the driving part 11 fixed to the barrel 9 are fitted together, and the clutches 11 and 12 are engaged, so that the barrel 9 is moved to the spring 10.
The screen 3 is not accommodated in the case 8 because it does not rotate in the winding direction (in the direction of arrow X) due to the urging force. Then, the fixing suction cup 5 is attached to a desired position of a predetermined side window. In this manner, the screen 3 is properly held at an arbitrary position while preventing the barrel 9 from rotating in the winding direction of the screen 3 due to the biasing force of the spring 10. Next, when the screen 3 is completely housed in the case 8, the fixing suction cup 5 is first removed from the side window, most of the screen 3 is pulled out from the case 8, and then the screen 3 is suddenly released. At this time, since the urging force of the spring 10 is large, the barrel 9 rotates relatively quickly in the direction of the arrow X. Further, since the driving portions 11 of the one-way clutches 11 and 12 fixed to the barrel 9 are engaged with the driven portion 12 fitted into the shaft 13, the driven portion 12 also rotates relatively quickly. Due to the centrifugal force of the driven portion 12, the notch 14 ₁ of the centrifugal stopper fitting 14 and the pawl 13 ₁ of the shaft 13 do not engage with each other.
(See b in FIG. 4) The screen 3 is forcefully rolled into the barrel 9, and is housed in the case 8 until the stopper 7 for preventing rolling comes into contact with the case 8.

[Effects of the invention] Since the present invention is configured as described above,
This produces the following effects.

In the side sunshade with a stopper mechanism according to claim 1, with the screen pulled out from the case by a desired portion, the tip of the screen is prevented from rotating in the winding direction of the barrel due to the biasing force of the spring. By fixing it to the designated side window with the fixing suction cup,
The screen can be held without excessive force being applied to the fixing suction cups, improving reliability.

In the side sunshade with a stopper mechanism according to claim 2, even if the drive part rotates in the direction of rotation of the barrel when the screen is pulled out, the specific drive part remains reliably stationary and does not rotate, so that the screen can be smoothly moved to the case. It can be pulled out from within.

In the side sunshade with a stopper mechanism according to claim 3, when the screen is stored, the trapping prevention stopper comes into contact with the case to prevent the tip of the screen from being rolled into the case. Improved reliability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the side sunshade with a stopper mechanism of the present invention, and Fig. 2 is a cross-sectional view of the main part with the screen 3 removed from the side sunshade with a stopper mechanism of Fig. 1. 3 is a perspective view of the other end of the shaft 13, and FIGS. 4a and 4b are cross-sectional views of the stopper mechanism, with the notch 14 ₁ of the centrifugal stopper fitting 14 engaged with the pawl 13 ₁ of the shaft 13, respectively; Figures 5a and 5b, which show the disengaged state, respectively show the drive unit 1.
1, FIG. 6 ab is a side view and front view of the driven part 12, FIG. 7 a is a perspective view of the conventional example, and FIG. 7 b is a line A-A in FIG. 7 a. FIG. 2 ₁ , 2 ₂ ... Hook, 3 ... Screen, 3 ₁
... Tip, 3 ₂ ... Opening, 4 ₁ , 4 ₂ ... Holder,
5...Fixing suction cup, 6...Pull handle, 7...
Stopper for preventing entanglement, 8... Case, 9...
Barrel, 10...spring, 11...driver,
11 ₁ ... protrusion, 11 ₂ ... through hole, 12 ... driven part, 12 ₁ ... recess, 12 ₂ ... through hole, 12 ₃ ,
12 ₄ ... Wall, 13 ... Shaft, 13 ₁ ... Pawl, 14 ... Centrifugal stopper fitting, 14 ₁ ... Notch, 14 ₂ ... Through hole, 15 ... Insert plate, 16 ... Cap.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A long screen 3 having a fixing suction cup 5 at one end is drawn out of a substantially semi-cylindrical case 8 and rolled up so as to be freely stored inside the case 8. The side sunshade is equipped with hooks 2 ₁ and 2 ₂ that can be locked near the end of a predetermined side window on the back side, and is provided with a barrel 9 to which the other end of the screen 3 is fixed in the longitudinal direction. The barrel 9 has a holder 4 ₁ whose one end is fixed to one end of the case 8.
The inside of the barrel 9 contacts the inner wall of the barrel 9 and allows the barrel 9 to rotate, but due to the frictional force caused by the contact, the barrel 9 is attached so as to wrap around the screen 3. Most of the shaft 13, which has a spring 10 wound around it having an outer diameter that acts as a force, is inserted from the other end of the barrel 9, and the end of the shaft 13 that protrudes from the other end of the barrel 9 The drive unit 1 of the one-way clutches 11 _{and 12} is fixed non-rotatably to a holder 42 fixed at one end, while the other end of the barrel 9 has a drive unit 1 for one-way clutches 11 and 12 that are engaged when the screen 3 is retracted.
1 is fixed, the other end of the spring 10 is fixed to the drive part 11, and a pawl 13 ₁ is formed in a portion of the shaft 13 that protrudes from the other end of the barrel 9.
The driven portion 1 of the one-way clutches ₁₁ and 12 is fitted into the outer periphery on which the third pawl 131 is formed.
2, which is equipped with a centrifugal stopper metal fitting 14 fitted into its inner diameter, and the centrifugal stopper metal fitting 14 has a through hole ₁₄₂ larger than the outer diameter of the shaft 13, and has a constant rotation of the driven part 12. A notch 14 1 is formed that engages with the pawl 13 ₁ of the shaft 13 when the shaft 13 rotates at a speed equal to or less than a certain number of rotations, and is disengaged by the centrifugal force of the driven portion 12 when the rotation speed exceeds the certain rotation _speed . A side sunshade with a stopper mechanism. 2 The drive unit 11 of the one-way clutches 11 and 12 is
A large number of hemispherical protrusions 11 ₁ are formed on one side,
The driven part 12 has a number of recesses 12 1 on a side opposite to the one side that can be fitted with a number of hemispherical protrusions 11 ₁ and have a wall surface that is slightly inclined in the direction of rotation of the barrel 9 when the screen ₃ is pulled out.
2. A side sunshade with a stopper mechanism according to claim 1, wherein said side sunshade is provided with a stopper mechanism. 3. The side shield with a stopper mechanism according to claim 1 or 2, wherein a pull handle 6 is attached to a desired part of the fixing suction cup 5, and a protruding stopper 7 for preventing entanglement is attached to the surface of the pull handle 6. Aid.